// JavaScript Document
	//以字符串的形势返回当前日期时间
    function now() {
        var mdate = new Date();
        ss = mdate.getFullYear() + "-" + (mdate.getMonth() + 1) + "-" + mdate.getDate() + " " + mdate.getHours() + ":" + mdate.getMinutes();
        return ss;
    };